Fig. 7

Longitudinal field measurements of the magnetic star HD 188041. Blue empty circles are from previous works (Babcock 1954, 1958; Mathys 1994; Mathys & Hubrig 1997) and the blue solid square from this work. Measurements have been phased with the rotation period of 224.78 d (Landstreet & Mathys 2000). Red solid triangles refer to previous field measurement obtained with FORS1 and with different grisms (see Landstreet et al. 2014; Bagnulo et al. 2015, and references therein).
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